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Closed Access item Population Cycles and Spatial Patterns in Snowshoe Hares]an Individua Oriented Simulation

Authors:Solé, Ricard V.
Bascompte, Jordi
Martínez, Norbert
Issue Date:Jul-1997
Publisher:Elsevier
Citation:Journal of Theoretical Biology (1997)187: 213-222 270–276
Abstract:The issue of population cycles in mammals is reviewed and focused on the particular case of the snowshoe hare spatiotemporal dynamics[ We have tested some hypotheses by means of an individual!oriented simulation.The results suggest that a lagged response to food supply is able to generate cycles\ which can be qualitatively very similar to the observed _eld ~uctuations[ Surprisingly spatial structures\ as target patterns and spiral waves\ emerge from the trophic interactions despite the random rules in the simulation[ These macroscopic patterns can explain the observed synchronization in hare dynamics over large areas\ which has been recently reported[ Furthermore\ the formation of spiral waves can explain the U!shape pattern in the synchronization vs[ distance plot observed by Ranta and co!workers[ Population cycles and spatial patterns go together[ An increase in the maximum vegetation available acts as a bifurcation parameter\ inducing cycles when it is up to a given thresholdSome {{simulation experiments|| are performed\ and the results are discussed in the light of _eld observations and theoretical predictions[
Publisher version (URL):http://dx.doi.org/10.1006/jtbi.1997.0430
URI:http://hdl.handle.net/10261/44301
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